In accordance with Article 69 EPC and the corresponding Article XI.28 of the Belgian Code of Economic Law, the scope of a granted patent is determined by the claims, and the description and drawings are to be used to interpret the claims. Similar to the Protocol on the Interpretation of Article 69 EPC, the Belgian Article XI.28 specifies that, for the purpose of determining the extent of protection conferred by a patent, due account shall be taken of any element which is equivalent to an element specified in the claims. This is the so-called doctrine of equivalence. This doctrine can be used by the patentee to claim a broader scope of protection in infringement proceedings.